Well my personal preference for stems on my bikes are Nitto Technomics. They are beautifully made and allow for a ton of handle-bar height adjustment. Additionally, they are readily available in 25.4mm clamp diameter. Nitto's other stems like the Pearl, Jaguar, and Dynamic are shorter in quill and exceptionally well-made.

However, if you need any 26.0 (3TTT, Nitto, Salsa) or 26.4 (Cinelli) clamp diameter stems, PM me, I have them.